virtio/block: Add multiqueue support

virtio/block: Add FLUSH support

virtio/block: Switch to the io_queue model

virtio: Overhaul ways of allocating descriptors

linuxcompat: add initial version of lib

signal: Don't WARN if checking there are no more RT signals

fs/dentry: dcache rename locking rework and hashtable work

spinlock: Add spin_lock_nested()

mm: Add utility function to allocate large hashtables

fs/namei: Disallow rename("aaaa/bbbb", "aaaa")

fs/namei: Fix dput() of a bad dentry in unlink()

block/io-queue: Improve handling of queue failure

fs: Use DEFINE_SEQLOCK

seqlock: Add way to statically define a seqlock

x86/bug: Also print the comm